Polymer-Plastics Technology and Materials,
Год журнала:
2024,
Номер
63(16), С. 2258 - 2275
Опубликована: Июнь 28, 2024
In
the
present
study,
polyvinylchloride
(PVC)
and
polymethyl
methacrylate
(PMMA)
blended
nanocomposites
comprised
of
graphene
nanoplatelets
(GNPs),
montmorillonite
(MMT),
copper
oxide
(CuO)
nanoparticles
were
prepared
through
solvent
casting
approach.
The
structural
morphological
measurements
confirmed
presence
dispersion
nanofillers
in
polymeric
chains.
Thermo-gravimetric
analysis
(TGA)
differential-scanning
calorimetry
(DSC)
investigations
suggested
improved
thermal
stability
for
nanocomposite
with
1.5
wt%
GNPs
loading
having
minimum
weight
loss
reduction
Tm
due
to
GNPs,
MMT,
CuO
acting
as
a
barrier
oxygen
molecule
diffusion
polymer-chain
movement
nanocomposite.
dielectric
impedance
properties
PVC/PMMA/MMT/GNP/CuO
investigated
1
Hz
20
MHz
frequency
range
at
room
temperature
have
shown
constant
upto
90.59
frequency.
σac
measures
be
by
0.0034
(S/m)
after
adding
resulted
from
interfacial
polarization
effect.
cole–cole
plot
formation
semicircles
higher
nanofiller
loadings
A
drastic
improvement
SETotal
was
observed
lower
concentrations.
total
SE
obtained
2.5
is
5
dB
8–12
GHz
absorption
dominant
nature
